It is probably read as "Business NetherLands", unsure what 2 stands for. C-type visas are valid across the whole zone.
– bipllJun 27 '18 at 5:07

Thanks Bipil but as per other internet search, BNL2 means benelux 2 ( bruxelles, nederland, and Luxembourg). Hence, I am confused that whether it is a business Visa or I can also travel on leisure? Thanks!
– Mandar ChaphalkarJun 27 '18 at 5:55

this is not correct. There is the standard Visitor and a Business visa, where by Visitor is mostly included with a Business visa. Depending on the issuer this is an entry in the remark field of the Visa.
– Mark JohnsonSep 16 '19 at 16:12

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@MarkJohnson: Have they changed the rules within the last few months? Please provide a reliable source for that claim.
– hmakholm left over MonicaSep 16 '19 at 16:18

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@MarkJohnson some countries make that entry and others do not. The presence of such an annotation on a multiple-entry visa does not prevent the bearer from using the visa for a different purpose on a subsequent trip.
– phoogSep 16 '19 at 16:23

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@MarkJohnson the application form requires the applicant to disclose the purpose of the visit. That does not cause the visa to be of a different category. The annotations you speak of are governed by national law, not the Schengen codes. See Annex 22 linked in my answer.
– phoogSep 16 '19 at 16:26

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@MarkJohnson sure, but there's nothing in the codes that prevents someone with a multiple-entry visa issued for tourist purposes from later using that visa for a business trip, nor vice versa. I see nothing in the German Aufenthaltsgesetz or Aufenthaltsverordnung that forbids this, either. An annotation in the "comments" section of a visa does not create a new category of visa.
– phoogSep 16 '19 at 17:19